Pencil-sharpener.



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P. LOPEZ.

PENCIL SHARPENER. APPLICATION FILED Nov.2?.I9I1.

PETE LOPEZ, 0F SPARKS, NEVADA.

'.PENCIL-SHABPENER.

Specification of Letters Patent.

Patented Apr. 9, 1918.

v Application filed November 27, 1917. Serial No. 204,263.

have invented a new and useful Pencil' Sharpener; and I do hereby declare the following to be a full, clear, and exact descripv tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to certain new and useful improvements in pencil Sharpeners, and has for its object to provide a device of this character which embodies novel features of construction wherebyv a pencil can be easily and vquickly sharpened by applying the pointed end thereof to the Sharpener and forcibly pushing downwardly thereon, therebeing no handles or other mechanism to be manually operated.

With these and otherobjects in view, the invention consists in certain novel combinations and arrangements of the parts as will more fully appear as the description proceeds, the novel features thereof being pointed out in the appended claims.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which z- Figure 1 is a side elevation of a pencil l Sharpener constructed in accordance with the invention.

Fig. 2 is a vertical longitudinal sectionalvr view through the same.

Fig. 3 is a horizontal sectional view on the line 3-3 of Fig. 2.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters. y

Referring to the drawings, which illustrate one embodiment of the invention, the numeral l designates a fiat bottomed receptacle which forms the base for the pencil Sharpener, the sides of the receptacle being returned inwardly at their upper edges and inclined downwardly, as 'indicated at 2, thereby providing a comparatively small opening through which the pencil shavings can enter the receptacle, and an annular pocket 3 Within which they will be collected and held in such a manner that they can not be blown out by a draft of air and will not be scattered if the pencil Sharpener is accidentally overturned. A tubular standard 4 projects upwardly from the center of the receptacle, the interior lthereof being formed with a helical groove 5. Y 4

A plunger 6 is slidable up and down With- 1n the tubular standard 4, said plunger being formed with a helical rib -7 which engages the helical groove 5 of the standard. and cooperates therewith to produce a rotary motion of the plunger as it is moved up and down. The upper end of the plunger is formed with an annular flange 6a and terminates in a stem 6b to which the inverted conical head 8 of a pencil Sharpener is secured. The usual slot 9 is provided in one side of the sharpening head, and a knife blade 10 is secured to the sharpening head in such av manner that the cutting edge thereof projects into the slot, thereby providing for sharpening the point of a pencil which is inserted into the sharpenin headwhen there is a relative rotary motion of the sharpening-head and pencil. The lower end of the sharpening head 8 may be securedto the upper extremity of the plunger 6 in any suitable manner, as by means of the set screw 11', while the upper end thereof has a pencil receiving collar 12 connected thereto. Spring arms 13 'may be provided at the upper end of the collar12 for releasably gripping the sides of the pencil.

A guide sleeve 14 is slidable upon the eX- terior of the standard 4, the upper end of the guide` sleeve being bent inwardly and crimped at 15 in such a manner as to obtain a loose bearing on the ange 6a of the plunger, thereby enabling the plunger to turn freely independently of the sleeve. Surrounding 'the plunger vand housed vwithin the sleeve is a coil s ring 16, the lower end of the coil spring earing against the standard 4, while the upper end thereof engages the inwardly bent end l5 of the sleeve.

When the plunger is moved downwardly the spring 16 is compressed, said spring serving l to return the plunger to its original posltlon as soon as pressure thereon is released. ln this connection it may be noted that the upper edge of the sleeve is bent inwardly and received loosely between the sharpening head 8 and flange 6a ofthe plunger so that the sleeve and plunger .must move up and down in unison, although the plunger is free to rotate independently of the sleeve.

Surrounding the sleeve 14 and sharpening head 8 is an outer tubular shell 17, said shell having a spaced relation to the memdownwardly to provide a flange 19 which surrounds and has a slightly spaced relation to the pencil engaging collar 12 of the Sharpener. 1f desired, the sleeve 14 and shell 17 may be held against rotation by means of a screw 20 which operates loosely within the slots 2'1 in the said members.

rlihis screw may also coperate with the ends of the slots to limit the up and down movements of the plunger.

1n using the device the point of the pencil to be sharpened is inserted in the sharpening head 8 and the plunger 6 forceddownwardly The collar l2 with the spring arms 13 grips the lower end of the pencil, while the sharpening head 8 and plunger 6 are caused to rotate by the engagement of the helical rib 7 of the plunger with the helical groove 5 in the tubular standard 4. r1`he rotation of the sharpening' Vead 8 causes the cutting edge of the lmife 10 to sharpen the pencil in the usualmanner, theshavings and dust being discharged through the slotl 9 and directed by the outer casing 17 into the receptacle 3. As soon as the pencil is removed the plunger 6 will be'returned to its original position bythe action of the spring 16. y1`he outer casing, or shell 17 may be provided with a side opening 25 which is normally closed by a door 26. The screw 11 is accessible through this opening, and the opening may also be utilized to remove accumulations of shavings from within the shell, should this become necessary.

Having thus described the invention, what 1 claim as new and desire to secure by Letters Patent, is v 1. A pencil Sharpener including an upright tubular Standard having a helical groove` therein, a plunger slidable within the tubular standard and formed with a helical rib vwhich engages and coperates with the helical groove to rotate the plunger when it is moved longitudinally in the standard, a sleeve slidable upon the exterior of the standard and loosely engaging the upper end of the plunger, a coil spring surrounding the plunger and housed'within the sleeve and acting to normally hold the plunger at the upper limit of its movement, a pencil sharpening head applied to the upper end ofthe plunger and arranged co..

outer guide shell may be supported in po-y by applying pressure to the pencil.

naeaeee axial therewith, and an outer tubular casing e5 surrounding the standard and sharpening head and spaced therefrom, said tubular casing serving to receive the shavings and direct them downwardly away from the sharpening head.

2. A pencil sharpenerincluding a receptacle, an upright tubular standard project-l ing from the base of the receptacle and having a helical groove therein, a plunger slidable within the tubular standard and formed with a helical rib which the engages and coperates withvthe helical'groove to rotate the plunger when it is moved longitudinally in the standard, a sleeve slidable upon the exterior of the standard and loosely engaging the upper end of therplunger, a coil spring surrounding the plunger and housed within the sleeve, said coil spring serving to normally hold the of its movement, a pencil sharpening head applied to the upper end of the plunger and arranged coaxial therewith, and a tubular casing surrounding the sleeve and sharpening head and spaced therefrom, said tubular casing serving to receive the shavings from the sharpening head and direct them into the receptacle.

3. A pencil Sharpener including a receptacle, an upright tubular standard projecting from the base of the receptacle and having a helical groove therein, a plunger slidable withinthe tubular standard and formed with a helical rib which engages and cooperates with the helical groove to rotate the plunger when it is moved longitudinally in the standard, a slotted sleeve slidable upon the exterior' of the standard and loosely engaging the upper end of the plunger, a coil spring surrounding the plunger and housed within the sleeve, said spring serving to hold the' plunger normally at the upper limit of-its movement, a pencil sharpening head applied to the upper end of the plunger and arranged coaxial therewith, a tubular casing carried by the sleeve, said casing surrounding the sleeve and sharpening head and being spaced therefrom so as plunger atthe upper limit to receive the shavings and direct them into i the receptacle, and a pm projecting laterally from the standard and loosely received wlthin the slotted portions of the sleeve and casing to prevent rotation and limit the up and down movements thereof.

4. A pencil Sharpener including a receptacle, an upright tubular standard projecting from the base of the receptacle and having. a helical groove therein, a plunger slidab e within the tubular standard and formed with a helical rib which engages and cooperates with the helical groove to rotate the plunger when-it is moved longitudinally in the standard, said plunger having an anpuller @ange at the upper 'end thereof, a

pencil sharpening head applied to the 'upper end of the plunger and arranged coaxial therewith, a sleeve slidable upon the eXterior of the standard and provided at its upper end with an inwardly extended flange which loosely engages the flange of the plunger and has the edge thereof received between the said flange and the lower end of the sharpening head, a coil spring surrounding the plunger and housed Within the sleeve, said spring normally serving to hold the plunger at the upper limit of its movement, and means carried by the sleeve for receiving the shavings from the sharpening1 head and directing them into the recep- 15 tac e.

In testimony whereof1 I have signed my name to this specification in the presence of two subscribing Witnesses.

PETE LOPEZ.

Witnesses:

LOUISE ZARI, ARTHUR F. LASHER. 

